Zobrazeno 1 - 10
of 11
pro vyhledávání: '"C. L. Haman"'
Diurnal tracking of anthropogenic CO2 emissions in the Los Angeles basin megacity during spring 2010
Autor:
S. Newman, S. Jeong, M. L. Fischer, X. Xu, C. L. Haman, B. Lefer, S. Alvarez, B. Rappenglueck, E. A. Kort, A. E. Andrews, J. Peischl, K. R. Gurney, C. E. Miller, Y. L. Yung
Publikováno v:
Atmospheric Chemistry and Physics, Vol 13, Iss 8, Pp 4359-4372 (2013)
Attributing observed CO2 variations to human or natural cause is critical to deducing and tracking emissions from observations. We have used in situ CO2, CO, and planetary boundary layer height (PBLH) measurements recorded during the CalNex-LA (CARB
Externí odkaz:
https://doaj.org/article/aca2e7354dcf455aac83dca244085905
Publikováno v:
Journal of Geophysical Research: Atmospheres. 119:6230-6245
Measurements and predictions of ambient ozone (O3), planetary boundary layer (PBL) height, the surface energy budget, wind speed, and other meteorological parameters were made near downtown Houston, Texas, and were used to investigate meteorological
Autor:
Carsten Warneke, Steven S. Brown, Li Zhang, Yuhao Mao, Jui Yi Tsai, Sergio Alvarez, Nicholas L. Wagner, Patrick R. Veres, Qinbin Li, C. L. Haman, Olga Pikelnaya, J. Andrew Neuman, John B. Nowak, D. Chen, Joost A. de Gouw, Barry Lefer, James M. Roberts, Thomas B. Ryerson, John S. Holloway, Bernhard Rappenglück, Ilana B. Pollack, Jochen Stutz, James Flynn
Publikováno v:
Atmospheric Environment. 81:421-432
NOx emissions and O3 chemistry in the Los Angeles (L.A.) Basin during the CalNex-2010 field campaign (May–June 2010) have been evaluated by analyzing O3 and NOy (NO, NO2, HNO3, PAN) observations using a regional air quality model (WRF-Chem). Model
Autor:
Patrick R. Veres, John B. Nowak, J. A. Neuman, J. M. Roberts, R. A. Ellis, Barry Lefer, J. S. Craven, Ann M. Middlebrook, Jerome Brioude, Hugh Coe, C. Cai, James Allan, J. M. Walker, Roya Bahreini, Andrew R. Metcalf, J. J. Ensberg, John H. Seinfeld, C. L. Haman, Jennifer G. Murphy, Wayne M. Angevine, Patrick L. Hayes, Jonathan Taylor, Jochen Stutz, Jose L. Jimenez, James Flynn, J. A. de Gouw
Publikováno v:
Journal of Geophysical Research: Atmospheres. 118:1777-1803
We evaluate predictions from the Community Multiscale Air Quality (CMAQ version 4.7.1) model against a suite of airborne and ground-based meteorological measurements, gas- and aerosol-phase inorganic measurements, and black carbon (BC) measurements o
Publikováno v:
Journal of Atmospheric and Oceanic Technology. 29:697-710
Boundary layer height is estimated during a 21-month period in Houston, Texas, using continuous ceilometer observations and the minimum-gradient method. A comparison with over 60 radiosondes indicates overall agreement between ceilometer- and radioso
Publikováno v:
Atmospheric Environment. 44:4005-4013
The Moody Tower measurement site at the University of Houston experienced several large ozone events during the Texas-II Radical and Aerosol Measurement Project (TRAMP) campaign between 13 Aug–02 Oct, 2006. This rooftop site samples that atmosphere
Autor:
Hans D. Osthoff, Steve Hurlock, Olga Pikelnaya, Joost A. de Gouw, Jochen Stutz, L. H. Mielke, James Flynn, Catalina Tsai, Barry Lefer, Jessica B. Gilman, C. L. Haman, Clare Wong
Publikováno v:
Journal of Geophysical Research: Atmospheres. 119
The chemical removal of NOx at night in urban areas remains poorly constrained due to uncertainties in the contribution of various loss pathways and the impact of the suppressed nocturnal vertical mixing. Here we present long-path differential optica
Autor:
L. H. Mielke, Trevor C. VandenBoer, Martin Graus, N. Grossberg, Patrick R. Veres, Hans D. Osthoff, Jessica B. Gilman, Harald Stark, Joost A. de Gouw, Cora J. Young, William C. Kuster, Olga Pikelnaya, Anthony K. Cochran, Barry Lefer, Jochen Stutz, Rebecca A. Washenfelder, Catalina Tsai, James M. Roberts, James Flynn, Steven S. Brown, C. L. Haman
Publikováno v:
Environmental sciencetechnology. 46(20)
Photolabile nighttime radical reservoirs, such as nitrous acid (HONO) and nitryl chloride (ClNO(2)), contribute to the oxidizing potential of the atmosphere, particularly in early morning. We present the first vertically resolved measurements of ClNO
Autor:
Jeff Peischl, B. Rappenglueck, Charles E. Miller, Seongeun Jeong, Xiaomei Xu, Kevin R. Gurney, Sergio Alvarez, Yuk L. Yung, Arlyn E. Andrews, E.A. Kort, Sally Newman, Barry Lefer, C. L. Haman, Marc Fischer
Attributing observed CO2 variations to human or natural cause is critical to deducing and tracking emissions from observations. We have used in situ CO2, CO, and planetary boundary layer height (PBLH) measurements recorded during the CalNex-LA (CARB
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f7ebfecd8695bd0dfd6336ed6591f26e
https://doi.org/10.5194/acpd-12-5771-2012
https://doi.org/10.5194/acpd-12-5771-2012
Autor:
N. Grossberg, Catalina Tsai, Winston T. Luke, C. L. Haman, Barry Lefer, Xinrong Ren, William H. Brune, Jochen Stutz, K. W. Wong
Publikováno v:
Atmospheric Chemistry and Physics, Vol 12, Iss 2, Pp 635-652 (2012)
Nitrous Acid (HONO) plays an important role in tropospheric chemistry as a precursor of the hydroxyl radical (OH), the most important oxidizing agent in the atmosphere. Nevertheless, the formation mechanisms of HONO are still not completely understoo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68f209d5de5568844d998e29cf65f308
https://doi.org/10.5194/acpd-11-24365-2011
https://doi.org/10.5194/acpd-11-24365-2011